Ads on television are never fun to have to sit through in most cases, but they're a reality of the business. Occasionally, ads have make incredible impact and become part of pop culture history - such as Apple's "1984" ad. Ads have become less and less creative and more and more hyperactive nonsense, but they're certainly not going anywhere.

Still, there's a time and a place for everything. With an increasing focus on reality programming on TV, it hasn't been difficult to work in in-show advertising, from the annoying songs around a Ford truck on "American Idol" to , well, racers having to come up with positive comments about the new Ford's ability to park. Ford is everywhere - there's even a painfully awful new reality series called "Escape Routes" from one of the "Amazing Race" producers that essentially functions as a multi-week promotion for Ford and other companies first, entertainment second (if at all.)

"Who Do You Think You Are?" (adapted from a British series) is effectively a promotional tool, as well, although to its credit it's at least far more subtle about it. "Who" is a "partnership" between NBC and Ancestry.com, a service that allows people to search for a detailed family history. In the case of the series, we see various celebs meet with representatives in order to discuss various historical data that have been dug up about their family members.

To the show's credit, it's well-produced, with the celebs often going to multiple locations to learn about their family members. Additionally, the show gets points for its straightforward presentation - it could have chosen to really pull at the heartstrings with score and the whole nine yards on several occasions each episode, but instead lets the celebs do the talking.

Things aren't sugarcoated, either - findings are at times shocking, exciting, saddening and remarkable. The celebs go through pride, happiness, sorrow and more as they progress throughout the search for their ancestors and there's certainly some very emotional moments. Lionel Richie's exploration of his great grandfather's past is particularly powerful. Gwynneth Paltrow's episode, while interesting, is a little more dry. Kim Cattrall's look at the actions of her grandfather and Ashley Judd's view to her past are a bit more compelling.

Additionally, it's pretty remarkable (insane, even) what the investigators are able to dig up from decades and decades prior. Overall, I'm still rather irritated by how advertising is increasingly moving into shows themselves, but "Who Do" really does manage to dig up some amazing historical nuggets and handles the material in a respectful, compelling way.